So, here's something pithy-ish about running - it's a lot like dancing. In both, your feet always have to remain under your body. This is something that beginners in both activities usually miss. For the runners, it can result in knee pain (or worse) because of over striding. For the dancers, it makes them late on their moves. Which means, of course, that they're soon far off the beat and frustrated.

Interestingly, the same doesn't seem to be true of fencing. There, you're constantly extending your front or back leg as you advance and retreat. To say nothing of lunging. Hmmm......